US2333998A - Machine for finishing edges of underpadding - Google Patents

Description

Nov. 9, 1943. 1. c. GORDON MAC'HINE FOR FINISHING EDGES OF UNDERPADDING Filed May '7, 1941 6 Sheets-Sheet 1 A TTORNE YS Nov. 9, 1943. J. c. GORDON MACHINE FOR FINISHING EDGES OF UNDEHPADDING Filed May 7, 1941 6 Sheets-Sheet 2 INVENTOR JACK C; GORDON ATTORNEYS Nov. 9, 1943. J. c. GoRDoN MACHINE FOR FINISHING EDGES O UNDERPADDING Filed May '7. 1941 6 Sheets-Sheet 3 INVENTOR JACK c. so Roon BY Z ATTORNEYS Nov. 9, 1943.

J. c. GoRDoN MACHINE FOR FINISHING EDGES OF UNDERPADDING Filed May '7, 1941 6 Sheets-Sheet 4 vll INVENTOR `N N m OMT MT OA G4 C. K c A IV FIG.,6.

Nov. 9,v 1943. J, c. GORDON MACHINE FOR FINISHING EDGEs oF UNDERPADDING e sheets-:sheet 5' Filed May '7, 1941 FIG. I4.

FIG.I3.

INVENTOR JACK C. GORDON BY `ATTORNEYS FIG. 7.

Nov. 9, 1943.

J. C. GORDON MACHINE FOR FINISHING EDGES OF UNDERPADDING Filed May '7, 1941 S Sheets-Sheet 6 sa INVENTOR JAcK c. como Patented Nov. 9, 1943 MACHINE Fon FINISHING EnGEs 0F UNDEEPADDING l v kJ ack C. Gordon, Detroit, Mich., assigner to Allen i Industries, Inc., Detroit, Mich., a corporation of Delaware Application May 7, 1941, Serial No. 392,381

solaims. (C1. ien-7s) This invention relates generally to machines for forming and iinishing the edges of underpadding for carpets, rugs and the like and refers more particularly to a machinefor forming and sealing the edge portions of the underpadding.

Heretofore the edges of underpadding have been vertical or at right angles to the top and bottom surfaces thereof and have been provided with stitching,'facing or binding to prevent the material of the underpadding from raveling or Working loose. Thus, considerable labor, time, and handling, as well as material such as tape, thread, and the like, were required in a factory to accomplish the desired results. Even then, the finished product had relatively sharp corners or abrupt edges which prevented the carpet or rug thereon from draping or'falling properly i onto the 'oor.

In the fpresent 4instance I have overcome the difficulties encountered with the old construc.

tions by providing the underpadding with beveled pressure sealed edges that not only obviate all sewing operations and thus eliminate the labor, handling, time and material expense referred to above, but that also take theplace of the usual abrupt right angles edges in the nished product and thus permit the carpet or rug thereon to drape or fall gradually ontothe floor. with an improved edge formation that,r effects a definite economy in manufacturing costs,that

Hence, I have provided an underpadding..

possesses many advantages .overI the conventional f edge construction, andrt-hat` provides a, worthwhile sales appeal in the industry.. y

Thus, it is an object of the present invention to provide a machine for forming to the configuration desired theedges or edge portions of under-I padding and for sealing such formed edges with a suitable adhesive substance so that such configuration Will be Veffectively maintained.

Another vobject is toy kprovideV a machine that', has means for forming 'and sealingl transverse `as` well as longitudinal edges of the underpadding.:

Another object is toprcvide a machine wherein a single set of rolls will suihce to formand v*seal the transverse edges aforesaid.

Another object `is to provide'fa machine wherein means is provided for synchronizing they motionA of the rolls for forming and sealing the trans'-, verse edges. v f f Another object is to provide a machine wherein` two `sets of rolls located respectively at op'p'c'nsitey sides of the underpadding are provided to form and seal the longitudinal edges and ythat are preferably Adriven from a single shaft.

Another Objectis to provide a machine rwhere.-

in the two sets of rolls just mentioned may'be spaced'or adjusted laterally relative'to eachother to "accommodate underpadding `of ldiierentvv widths.v

Other objects, advantagesand novel details'v of constructionA of this invention will be made more `apparent as this description proceeds.Y especially when considered in connection rwith their accompanying drawings, wherein: .i

Figure V1 is a topplan view of amachine em'- bodying my invention; Figure 2 is a longitudinal side elevation of vthe structure shown in Figure 1; i

Figure 3 is an end elevation of shown in Figure 2; v

Figure 4 is a vdiagrammaticy view .of` the meansvfor synchronizing the motion 'of 'the upper and Figure 5 is a top' plan view ofl one set-viof-'rollsiA and associated parts for forming and sealing'onef of the longitudinal edges of the underpadding;

' Figure 6 is an end'view of'the structurevlllus-'f tratedin Figure 5; y f

Figure 7 isa side elevation of illustrated in'Figures 5 and 6;

Figure 8 is a sectional view taken Vsubstantially on the line 8*-8 `of Figure 5;

Figure 9 is a sectional View takensubstantiallyl on the line 9-9 of Figure 5;

`,Figure lfO is a top plan viewof thesingleset of.vk rollsffor1 forming and sealing the'transverse edgesA of the underpaddng?.

Y -Figure 11 is afvertical sectional view through'`r the structur illustrated in Figure 10 f :Figure l2 is a` side elevation'of' thestrilcturt-:Vr

shown in Figure :10 Y

Figure 13 is an end tion;

Figure 14 is a side elevation' of the "structure"` illustrated in Figure 13.

Referring now to the drawings, A is a sheet' ofA underpadding formed of fibrous material and havingv pressure 'sealed beveled edges I0, and Bj is a machine for providing the underpadding with such beveled edges.

As usual', the underpadding A has a'flat or plain' lower surface I I for engagement with av floor and has a felted upper surface I-Z'for support- 1 ing engagement with the underside 'of a carpet or rug. The beveled edges I0 of the underpaddingare compressed tothe form shown and `are sealed 'and held in this formation by a suitable adhesive such as latex or aqueous dispersionsfof rubber. The usual colloidal latices may be used.

the structure the structure`v view of` a slight modifica-14' The machine B has two sets C and D, respec-H tively, of rolls for forming and sealing the longitudinal edges of the underpadding, and has a single set E of rolls for forming and sealing theVY l5 surfaces offthe Vunderpadding to squeeze orcomy press the material thereof into substantially V crossfsection; v'I'he lower` roll 2Iis preferably wider than the upper roll and carries the liquid adhesive, such as'v alatex solution,1 from a pan f 24V to the underside-of thefunderpadding'as the n latter is compressed by the rolls 20and2l.

The fshafts. I5 and I5 are provided at one endv with meshing gears 25 and 25` and are provided at their other end with'rolls 21 and 28 that cooperate with each other to `cut the underpadding along a predetermined line. Preferably a hardened tool steel`knifeis carried by the'upper periphery of the 4ropll 21.

erablyxknurled as shown vupon opposite sides of the knife 30 to `insure proper non-slip enaag'e-r ment of the'rolLfwith the underpadding. Moreover, it will be rnoted Cthat the'arrangementof I shafts and rolls is such that the rolls Y21La1'1d l28 carried by the" shafts I5 and I6 arelin'taridem with the rolls 20 and 2Icarried by the shafts 'Il .and I4 so that the. actual cutting of theamde'rpadding by ythe vrolls 421 and 25jWill besubstan-` of the underpadding after it has been 'madeby therlls20and2l. l l fd .i 'n

As shown, the shafts I3 to I6, inclusive, are jour# naled iny bearingsv 34 carried by the supporting frame I1. Preferably the bearings134 for the Vup-` per Yshafts I3 and I5 are adjustable by bolts 35 extending throughthertop'bar 36; ofthe frame and are held in positionby 'nuts 31and 38 `on said bolts above and below the bar. Herice,thepres` sure exerted by the upper rollsV I8 andf25 `upon the underpadding` maybe conveniently' adjusted as desired.

lToinsure"rotationof the/'rolls 20,2I, 21 andA 2l inthe proper direction and, at theY proper time, there ,is anl .endless kchain '40*trained around sprockets4I Vi'lxed to the upper shafts I3 rand I5. Moreover,V asit is. desirable to have the rollslof the two sets C and D `movein unison, there isa Shaft 42., extending across the machine Yand pro,-

tlally in line with the apex of thefvflformatin vided adjacent the respective sets C and D'with sprockets 43. Endless chains 44 connect these sprockets 43 to suitable sprockets 45 on the upper shafts I5 of the respective sets C and D. Thus, the shaft 42 constitutes a common drive for both sets C and D and may be operated by and under the control of any suitable meansV (not shown) so that its operation may be regulated ias-desired. In order that the sets C and yD may be adjusted relative to each other transversely of the machine to accommodate various widths of underpadding, the ybase 46 of each frame I1'has a tongueyand groove connection with a supporting base 41 carried by I-beams 48`mounted upon structural bars 49;V sliding movement of the base 46- relative to the base41 transversely of the machine is provided by this construction. Any suitable means (not shown) may be employed to hold or `maintain the bases 46 in adjusted position relative to the base 41.. In .this connection it will also be notedthatV the latex pans 24 are' carried by the siidable bases andtherei'ore` move therewith whenany adjustment is v The singleset E of rolls is'preferably to move across `the machine inrearof C and .D of rolls from one longitudinal edge to the other ofthe underpaddingV to seal ,the transverse edges thereof. ,.As'shown, lthis set E cornprises two cooperating trolls liliana 5I. on

shafts 52 and 53fjourna1ed in bearings bolted,

or! otherwise secured to carriages 5 5 and 553e-,- spectively, that are slidable. along trackzrails ,51.

upper roll carrieshardened toolsteellmlie 63, while the lower roll 5I carries, hardenedtool steelinsert 64.v The peripheriesfof/jthe rolls5l|-v and 5 I are beveled 1 or inclined, as; illustrated 59;

that the material of the underpadding will tions are performed substantially simultaneous#v ly b'y-'the rolls 53 and 5Iy as they'itrav'elacross.

g the underpadding. The lowerroll 5Irotates`fin a Ipan containing the 'adhesive solution solastoeonauct sucrfsoluuon fromk the pento the un-v derside of the underpadding. Preferably this pan' 65 is supported upon a part of the lowerl carriage 56 so as tomove therewith.:A y V `To p rovide`v proper non-'slip engagement between the underpadding and the rolls' 53 andjl, there are auxiliary rolls"1ll`,"1i, 12fand'13.l re-r. spectively,` Varranged upon` opposite sides'. of ,the mns so and 5|. l.saumur the' upper auxiliary mus 1o and 1I cqnsututefiateral extensionstne muto ,and have knurlee oen'pheues `for proper non-skiden'gagement with .the undergdding, Whie the llowerauxiliary;r rollsA'I-2and5 l are vspace laterally from, the r lli I,v v nxedto me Shanna. Y l f` o, @dye To provide synchronized -movem'entfiof theiup,` per and lowercarriages vand thereis anl endless chain l14 fastened to thecarriages I5 and 56 and trained abouteight `sprockets 15, as

illustrated in Figure 4. One of thesefsprcltets constitutes the ydrive means for the chain 14;'and

forl this purpose is ilxed upona shaft 16 of a'.I suitable reduction gearing 11 operatively connected to a. drive shaft 18 of a--reversible` electric'V motor 1s. Anylsuitabiemeans motshownafroremployed..

To obtain the proper driving raction for the.

rollgsv|l and 5|;th`ere. are.v gears 80: fixed: to the shaftsY 52 and.4 53" at.- opposite ends. thereof and:

meshing Withpinion-s 8| that engage/rack` strips 82 /ixed toi and extending longitudinally of =s11itf able: frame members. 83 4'and' 84; respectively,- Any?,

suitable shafts, such as 85,5mayf beprovided in the 'carriages-55 and y53, for the pinions 81|1so that the latter will cause the gears alrite-rotate the shafts;.52 and532asthe pinionsltravel alongthevrackstrips' 82;

In theipresent instancethe-lowertrack rails- 6|and 62 are supported onl-top ofI-"bearnss mounted onthestructural-members 4S; whileI the upper-track` rails 51, '58; 59 and B8, 'respec-vv tively, aresuspended fromI-beamswl supportedl from one orf-morefstructuralimernbers '88;y Actually the structural members '49', beams-48'? and 8S, respectively, and base 4l cooperatively form or constitute the bediof the machine and carry all but the suspended elements of the machine.

In use, the underpadding made in sheet form in the usual manner moves from left to right of the machine as illustrated by the arrow in Figure 1 so as to be engaged rst by the squeeze rolls 2D and 2| of both sets C and D which not only compress the material of the underpadding to provide V-shaped formations, but also cause the liquid adhesive transferredl by the' lower rolls 2| from the pans 24 to the underside of the underpadding to be squeezed through the material of the underpadding to impregnato the V formation and thus provide an adhesive film on the upper inclined surface I6a as well as upon the lower inclined surface IDD of the V formation. Further movement of the underpadding to the right causes the rolls 21 and 28 of both sets C and D to cut the underpadding adjacent the apexes of the Vs to provide the beveled longitudinal edges of the underpadding. Further movement of the underpadding to the right places it in position to he engaged by the rolls Sil and 5| of the single set E to form one transverse beveled edge of the underpadding. This is accomplished by stopping temporarily the drive shaft 42 and by starting the normally idle motor 'i9 to cause the carriages 55 and 5G carrying the rolls 5i! and 5| to be moved in one direction across the underpadding. The motor 18 is then stopped and the shaft 42 is again started to cause further advancement of the underpadding to the right. When it is desired to form the second transverse edge of the underpadding, the shaft 42 is again stopped and the motor 19 is started so that the carriages 55 and 56 will move in the opposite direction across the underpadding. As the carriages 55 and 55 move back and forth as described, the rolls 513 and 5| will perform substantially simultaneously three operations, i. e., compression of the material of the underpadding to V cross section, severing or cutting of the material at the apexes of the Vs, and impregnation of they Vs with the adhesive liquid. After all four edges of the underpadding are formed, the `latter is then placed in a dryer (not shown) so that the liquid adhesive will be transformed into a resilient binder for the compressed material to effectively maintain the shape of the beveled formations. Thus, when the underpadding comes out of the dryer, it is a finished product ready to be Wrapped in the usual manner for shipping purposes.

In Figures 13 and 14 I have illustrated a slight modification wherein only one set 90 of rolls is employed; As4 shown, this seirllzfis. identical-E with thesingle set. Egfexcept; that lthe 'shaftsli and 821 fori the rollsfSSland 9'4-iare mounted-*inni frameBSiin the. same. way that. the-.shafts I5 and.

lzof the .set D are mounted, and have at4 oneiendl meshing gearsV 96 and'` 9lr'r'foriestablishing ia, drive,.- ing connection between said :'shafts. Also .adrivol shaft 98 may be connectedwto the shaft ill-by a chain 99;.trained.aboutsprockets |'00'and Illon the shafts 9|v and.. Thus, with this. construction a sheet of underpadding maybe.. provided wherever desired with a beveled edgefofnrthetype. described by simply moving such Vsheet in' thedesired manner relativato the rolls 93 vand 9L I In. this as. well. as in the structure previouslyl described, any suitable table or conveyer- (not'f shown) may be employed/to support the underpadding while `being passed;` through the machine. f l y What Iclaim'. as myinventionise 'l v l. A machine` of the classl describedShavingl uppei and lower track rails, carriages vmovable-` along said rails, cooperating rolls carried respectively by said carriages, and actuating means for said carriages including a plurality of spaced sprockets, and an endless chain trained around said sprockets and having portions thereof connected to said carriages, a drive shaft for one of said sprockets, and means for driving said shaft.

2. A machine of the class described having a frame, upper and lower track rails carried by said frame, carriages movable along said rails, shafts journaled in said carriages, one in each carriage, cooperating rolls on said shafts, one on each shaft, and actuating means for said carriages including a plurality of spaced sprockets, an endless chain trained around said sprockets and having portions thereof connected to said carriages, a drive shaft for one of said sprockets, and actuating means for the rolls including racks carried by the frame, pinions on the carriages meshing with the racks, and gears on the shafts for the rolls and meshing with said pinions.

3. In a machine of the class described, a frame, upper and lower tracks carried by said frame, separate carriages movable along said tracks, one along the upper track, and one along the lower track, shafts carried by said carriages, one shaft to each carriage, rolls fixed to said shafts having means for compressing a portion of a fibrous sheet to substantially V cross section and having means for severing the sheet at the apex of the V formation, means for synchronizing the movement of said carriages, rack bars nxed to said frame, gears on said shafts, and pinions meshing with said rack bars and gears and operable when the carriages move along said tracks to rotate said gears, shafts and rolls.

4. A machine of the class described having a bed, two laterally spaced upright frames on said bed, fro-nt and rear pairs of vertically spaced horizontal shafts in 'each' of said frames, cooperating rolls carried by the vertically spaced shafts of the front pair in each frame and having means for compressing longitudinally extending portions of the underpadding to substantially V cross section, cooperating rolls carried by the vertically spaced shafts of the rear pair in each frame and having means for severing the underpadding at the apexes of the V formations to provide the underpadding with longitudinal edges of V cross section, upper and lower horizontal track rails extending across the bed at one side of the laterally spacedframes, upper and lower carriages slidable along said rails from one longitudinal edge'to the other of the uhderDad-- ding;'horizontal shafts .journaledin Vsaid car-V riages, :oneuin *.eachcarriage, Aand cooperating. rolls carriedsby'the last mentioned shafts` and having means for compressing a transversely extendingV portion lof the underpadding tonsubstantially V. cross section and having meansv forv severing the underpadding at the apex of `the V "formation to provide theunderpadding with a transverselyextending edge of V cross section. .5. A `machine of the .class described having a.V bed; upper and lower horizontal` track rails 'extending Vacross. the bed, upper kand lower. carriges slidable along said rails,` horizontal shafts journaled in said'carriages, one in each carriage, cooperating rolls carried bysaid shafts and hav'- ing means Afor compressing a-portion of a brous sheet to substantially V cross section-and having means for severing the fibrous sheet atthe apex of the V formation, means; providing synchronized movement lof the upper and lower carriages back and forth along saidtrack `rails,

` rails.

means forv severing the fibrous sheet at the-apex. ;k

of the V formation, means providing synchro-A nized movement-.of theyupper andflower cn'- riages back and forth' along said `track rails. and means for rotating in unison the shafts-'instiidA carriages as the "flatter moves-alongl said rails, including racks extending along the rails. Sears on the shafts, and pinions 4carriedby the car.- riages and meshing with the racks and sears. f

JACK c.. GORDON.

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